Jacob elliott



UUAIINU UH PLAS IL.

UNITED STATES PATENT OFFICE.

JACOB ELLIOTT, OF HASTINGS, ENGLAND.

SPECIFICATION forming part of Letters Patent No. 435,485, dated September 2, 1890. Application filed October 15, 1888. Serial No. 288,099. (No specimens.) Patented in England February 15, 1884, No. 3,363.

To all whom, it may concern.-

Be it known that I, J ACOB ELLIOTT, a subject of the Queen of Great Britain, residing at Hastings, in the county of Sussex, England, have invented a new and useful Compo- ;sition of Matter for Artificial-Stone Pavinglabs and Slabs and Blocks for Building Purposes, (for which I have obtained Letters Patcut in Great Britain, No. 3,363, dated February 15, 1884,) of which the following is a specification. I This invention relates to an improved com position of matter uscf n1 for man y purposessuch, for instance, as in the manufacture of .5 artificial-stone paving-slabs and slabs and and blocks for building purposes-and where by I produce such slabs or blocks with extremely hard surfaces and very durable. In practicing myinvention I take Kentishrag, Portland 0 r "ck (or 'ork stone) and mix t rem all together, and then place the mixture in vats containing water. When it is wel oak ed l remove it or well gage it with I ortland com- 55 out in the proportion of about we p.

"IT 1c crushed mixture to two parts of the Porlinch n esh and,the dus the crushed and sifted stone is well soaked, and, the superfluous water having been re- )Logglgstpgrc, and moved, it is mixed with about an equal pro- 70 dust verv fine l\ sifted, soaked in water, am portion of Portland cement gaged stifily and mixed with lorlland ce i gp 1n the proportion of abou \0 par t iestone-dust mixture to about'th'reepm' ofdortland cement stilily gagedf Th'e above-named proportions are those which I have found to give good results in practice; but they may be varied without departing from my invention, as will be Well understood. This composition, when sufficiently set, may have its surface smoothed or leveled by means of a trowel or strikingedge, or its surface may be suitably roughened, particularly when it is used as the wearing or outer surface of slabs or blocks where 5 there is a deep gradient.

1 find my improved composition very valuable as a faei ngor top layer in the manufacture of slabs, blocks, &c., the main body of which may be made of any suitable coarser 4c composition, or in which any successive layer is of other or finer materials than those composing the layer next beneath it.

By way of illustration I would state that I have found that a most valuable article is 5 produced by using my composition, as follows: I take aquantit-y of bowlders from the sea-sho e, and fire-bri'E' For or an or York stone, the Sam ms being preferably crushed separately, (and washed, where necessary.) I then take about equal proportions placed or spread upon the surface of the body material in the mold. Over this first facing Ithen apply while wetthe mixture first above described and forming the subject-matter of this application. When sufiioieutly set, the face is finished by being smoothed and leveled by means of a trowel or striking-edge, or the surface may be suitably roughened, particularly when the slabs are to be used for steep 8o gradients. These compound blocks or slabs are left in the molds until they are set sufficiently to allow of their removal, which usually takes place in about three days, and after being left to set for a few days are placed in water for about twenty-four hours. They are then removed and placed in the open air to harden. It will be obvious that the facings should be applied before the surfaces become set.

In using my improved composition in manufacturing blocks or slabs other than paving slabs or blocks 1 proceed substantiallyin the manner above described, the facings being applied to such surfaces of the body as are 5 required or 'as will be exposed. The thickness of the body and of the facings will natu rally vary, according to rcquirmnents; but I have found that for pavingslabs of two and one-half inches in thickness the facings IOC 435,485 e I! y; :Onid be about one-fourth inch for the first poses,& :.,consistingof Kentish-mg,Portion;,

1d one-eighth inch for the inst 01' other one, I 01' York stone, finelysifted Bath-stone diw lnle for bloeks 01' slabs for other purposes and water, mixed with Portland cement, i

e fac-ings may he of less thickness. the proportion suhslantially as set forth. J I c1ai1n- JACOB ELLIO'HX; The described com iiosition, suimi :10 for and Witnesses: 5

the nmnnfaetul'e of artificial-stone paving- G. F. REDFERN, hi: or as blocks and shihs for builders" pur- JOHN E. BOXFIELD. 

